<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>


<script>
    window.alert("你是一个牛马吧")

    document.write("你果然是一个牛马")

    console.log("你还是一个傻逼")

</script>
</body>
</html>